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Updated: Jul 13, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
Published on: March 12, 2021
Shoulder motion description: the ISB and Globe methods are identical.
1Department of Orthopedic Surgery, University of California Davis, Sacramento, CA 95817, USA. george.rab@ucdmc.ucdavis.edu
The International Society of Biomechanics (ISB) standard and the Globe method for describing 3D shoulder position are numerically identical. This finding confirms their interchangeability for accurate and unambiguous clinical application.
Area of Science:
- Biomechanics
- Orthopedics
- Kinesiology
Background:
- Describing three-dimensional shoulder position is crucial in biomechanical analysis.
- Traditional methods like the International Society of Biomechanics (ISB) standard use rotation sequences.
- Alternative methods, such as the Globe method, aim for simpler, unambiguous measurements.
Purpose of the Study:
- To compare the ISB standard and the Globe method for describing shoulder position.
- To determine the numerical equivalence and interchangeability of these two methods.
Main Methods:
- Both the ISB standard and the Globe method were applied to analyze shoulder positions.
- A comparative analysis was performed between the two descriptive techniques.
Main Results:
- The International Society of Biomechanics (ISB) standard and the Globe method yield numerically identical results.
- The two methods are demonstrated to be interchangeable for shoulder position analysis.
Conclusions:
- Despite mathematical equivalence, simpler methods for describing shoulder position are sought for clinical use.
- This study confirms the numerical identity of the ISB rotation sequence and the Globe method, supporting their interchangeable use.
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